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प्रश्न
What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.
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उत्तर
| First trophic level | Third trophic level |
| Producers belong to the first trophic level. | Carnivores belong to the third trophic level. |
| They prepare their own food by photosynthesis. | They consume the flesh of other animals. |
| Example: Green plants. |
Example: Lions.
|
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संबंधित प्रश्न
The following statement is true or false :
Secondary consumers and tertiary consumers, both are carnivores.
Define decomposers.
Name one decomposer.
What is the role of decomposers in the ecosystem?
At which trophic level a person is feeding when he is eating apple.
In a food chain, the initial organism is usually :
(a) photosynthetic
(b) herbivore
(c) saprophytic
(d) parasitic
The decomposers in an ecosystem ______.
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
The following is a food chain that ends with human :
plants → bee → human
Explain how plants provide food for bees.
The following is a food chain that ends with human :
Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name the organism which Y could be.
Fill in the following blank with suitable word :
Grass → ........... → Human
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?
In an ecosystem, herbivores represent ______.
Food chains are very important for the survival of most species.
If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?
Define – Heterotrophs.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
